eli5: How does overdosing on stuff like pain killers work?

Question

I saw another post on here and it explained like heroin or fent overdoes but what is the difference between that and stuff like painkillers? Does it work differently or are they all the same (ODS)?

(IDK whether to tag biology or chem)

In: Chemistry

Answer 1

all drugs are different. for stimulants an OD can be a heart attack or psychosis. for things like pain pills they depress your central nervous system to they point where your body slows its breathing and heart rate to 0.